How long is the flight from Idaho to London?

A quick flight from Idaho to London can take about 13h 35m. Virgin Atlantic provides one of the quickest options available for as low as £436. The distance from Idaho to London is about 4705 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

What are the cheapest airlines to fly from Idaho to London one-way?

The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as £329. However, be on the lookout for offers from American Airlines and United Airlines, as they are both options that can get you from Idaho to London for a low price.

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

What are the most popular routes from Idaho to London?

While some choose either Spokane - London Heathrow or Spokane - London Gatwick, Boise Air Term. Gowen Fld - London Heathrow is the most popular route from Idaho to London.

How far in advance should I book a flight from Idaho to London?

To save up to 42% on this flight, we recommend booking at least 54 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Idaho to London from £463 1-2 weeks out and tickets from £641 for flights departing within the next 72 hours.

What is the cheapest month to fly from Idaho to London?

Flights from Idaho to London lean towards being more expensive in June. Prices are generally better when you fly from Idaho to London in October, with the cheapest ticket starting at £414.

Can I find deals for flights from Idaho to London that include hotel bookings?

Yes. In addition to deals on Idaho to London flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Idaho to London?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to London.

Can I find deals for business class flights from Idaho to London?

Yes. Cheapflights offers flight deals from Idaho to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£188+ Cheap Flights from Idaho to London

Q: How much does it cost for a return flight from Idaho to London?

Airfare is below average for this route at the moment. Idaho to London flights typically cost between £555 and £682 in September. The cheapest return flight price found within the last 3 days was £449 on United Airlines (23 Sept-1 Oct).

Cheap flight deals from Idaho to London

Round-trip from	£436
One-way from	£188
Popular in	June
Cheapest in	October
Average price	£585

Virgin Atlantic
6/10-22/10
3 total stops
31h 05m total
Idaho to London

Search Deals

21/10
1 total stop
37h 03m total
Idaho to London

Search Deals

Highest demand for flights based on searches. 23% potential increase in price (£154 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 5% potential price decrease (£26 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Find flight deals from Idaho to London

Cheapest flights from Idaho to London
Explore the most affordable flight options available from Idaho to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.

Mon 6/1013:15IDA - LHR

1 stop13h 35mVirgin Atlantic

Wed 22/1011:45LHR - IDA

2 stops17h 30mVirgin Atlantic

Deal found 11/9£436

Tue 23/907:00BOI - LHR

1 stop22h 20mUnited Airlines

Wed 1/1009:30LHR - BOI

2 stops33h 09mUnited Airlines

Deal found 11/9£449

Tue 30/914:39BOI - LHR

1 stop14h 41mUnited Airlines

Fri 31/1011:10LHR - BOI

2 stops32h 19mUnited Airlines

Deal found 11/9£454

Mon 6/1006:00IDA - LHR

1 stop20h 50mDelta

Wed 22/1006:30LHR - IDA

2 stops22h 45mDelta

Deal found 12/9£455

Mon 6/1013:15IDA - LHR

2 stops18h 00mKLM

Wed 22/1006:30LHR - IDA

2 stops18h 43mKLM

Deal found 10/9£456

Tue 23/909:52BOI - LHR

2 stops16h 43mAir Canada

Wed 1/1009:30LHR - BOI

2 stops21h 14mAir Canada

Deal found 11/9£459

Tue 23/913:00BOI - LHR

1 stop13h 50mDelta

Wed 1/1006:15LHR - BOI

2 stops19h 01mDelta

Deal found 10/9£460

Wed 5/1106:00GEG - LHR

1 stop20h 00mDelta

Wed 19/1106:20LHR - GEG

2 stops20h 38mDelta

Deal found 11/9£460

Tue 21/1014:17GEG - LHR

1 stop14h 53mDelta

Tue 16/1206:30LHR - GEG

2 stops21h 39mDelta

Deal found 10/9£461

Tue 28/1013:00JAC - LHR

1 stop15h 00mKLM

Wed 5/1120:25LHR - JAC

2 stops25h 22mKLM

Deal found 11/9£461

Wed 15/1015:37GEG - LHR

1 stop14h 38mKLM

Wed 29/1006:30LHR - GEG

2 stops17h 14mKLM

Deal found 11/9£461

Tue 4/1107:15GEG - LHR

2 stops15h 50mDelta

Tue 11/1106:20LHR - GEG

2 stops21h 43mDelta

Deal found 12/9£464

Best flights from Idaho to London
Discover carefully curated flight deals from Idaho to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 September 2025.

Mon 6/1013:15IDA - LHR

1 stop13h 35mVirgin Atlantic

Wed 22/1011:45LHR - IDA

2 stops17h 30mVirgin Atlantic

Deal found 11/9£436

Tue 23/907:00BOI - LHR

1 stop22h 20mUnited Airlines

Wed 1/1009:30LHR - BOI

2 stops33h 09mUnited Airlines

Deal found 11/9£449

Tue 30/909:45BOI - LHR

2 stops19h 05mAir Canada

Fri 31/1014:30LHR - BOI

2 stops29h 14mAir Canada

Deal found 11/9£454

Mon 6/1006:00IDA - LHR

1 stop20h 50mDelta

Wed 22/1006:30LHR - IDA

2 stops22h 45mDelta

Deal found 12/9£455

Mon 6/1013:15IDA - LHR

2 stops18h 00mKLM

Wed 22/1006:30LHR - IDA

2 stops18h 43mKLM

Deal found 10/9£456

Sun 26/1013:15IDA - LHR

2 stops16h 25mMultiple Airlines

Sun 2/1110:45LHR - IDA

1 stop14h 28mMultiple Airlines

Deal found 11/9£536

Thu 25/910:59JAC - LHR

1 stop13h 41mAmerican Airlines

Sun 5/1009:15LHR - JAC

1 stop13h 13mAmerican Airlines

Deal found 10/9£570

Wed 25/211:35GEG - LGW

2 stops15h 20mIcelandair

Wed 4/311:55LGW - GEG

2 stops17h 04mIcelandair

Deal found 10/9£627

Tue 30/914:39BOI - LHR

1 stop14h 41mUnited Airlines

Fri 31/1011:10LHR - BOI

2 stops32h 19mUnited Airlines

Deal found 11/9£454

Tue 23/913:00BOI - LHR

1 stop13h 50mDelta

Wed 1/1006:15LHR - BOI

2 stops19h 01mDelta

Deal found 10/9£460

Tue 28/1013:00JAC - LHR

1 stop15h 00mKLM

Wed 5/1120:25LHR - JAC

2 stops25h 22mKLM

Deal found 11/9£461

Wed 15/1007:00BOI - LHR

1 stop22h 20mUnited Airlines

Wed 22/1006:55LHR - BOI

2 stops33h 47mUnited Airlines

Deal found 11/9£459

Last-minute flights from Idaho to London
Discover last-minute flight deals from Idaho to London. Data last updated 12 September 2025 and is based on user searches.

Wed 17/917:39BOI - LHR

1 stop11h 41mUnited Airlines

Fri 3/1009:30LHR - BOI

2 stops33h 09mUnited Airlines

Deal found 10/9£506

Wed 17/905:45BOI - LHR

1 stop22h 35mDelta

Fri 3/1011:30LHR - BOI

2 stops19h 22mDelta

Deal found 11/9£518

Wed 17/916:20BOI - LHR

1 stop14h 55mKLM

Fri 3/1012:25LHR - BOI

1 stop18h 34mKLM

Deal found 11/9£523

Fri 19/914:42BOI - LHR

1 stop11h 58mUnited Airlines

Fri 26/914:50LHR - BOI

1 stop14h 40mUnited Airlines

Deal found 11/9£503

Fri 19/913:38BOI - LHR

1 stop14h 12mMultiple Airlines

Fri 26/910:45LHR - BOI

1 stop16h 05mMultiple Airlines

Deal found 10/9£518

Mon 22/913:18GEG - LHR

1 stop16h 57mDelta

Sat 4/1006:30LHR - GEG

2 stops20h 10mDelta

Deal found 10/9£498

Mon 22/914:23GEG - LHR

1 stop14h 47mKLM

Sat 4/1012:25LHR - GEG

1 stop19h 33mKLM

Deal found 10/9£503

Mon 6/1013:15IDA - LHR

1 stop13h 35mVirgin Atlantic

Wed 22/1011:45LHR - IDA

2 stops17h 30mVirgin Atlantic

Deal found 11/9£436

Mon 6/1006:00IDA - LHR

1 stop20h 50mDelta

Wed 22/1006:30LHR - IDA

2 stops22h 45mDelta

Deal found 12/9£455

Mon 6/1013:15IDA - LHR

2 stops18h 00mKLM

Wed 22/1006:30LHR - IDA

2 stops18h 43mKLM

Deal found 10/9£456

Sun 26/1013:15IDA - LHR

2 stops16h 25mMultiple Airlines

Sun 2/1110:45LHR - IDA

1 stop14h 28mMultiple Airlines

Deal found 11/9£536

Tue 28/1013:00JAC - LHR

1 stop15h 00mKLM

Wed 5/1120:25LHR - JAC

2 stops25h 22mKLM

Deal found 11/9£461

One-way flights from Idaho to London
Search for one-way flight options from Idaho to London. Find affordable one-way fares based on user searches. Data last updated 12 September 2025.

Tue 21/1013:52GEG - LGW

1 stop37h 03mMultiple Airlines

Deal found 10/9£188

Mon 24/1122:45BOI - LHR

3 stops35h 45mMultiple Airlines

Deal found 10/9£247

Mon 24/1122:45BOI - LGW

3 stops52h 05mMultiple Airlines

Deal found 10/9£261

Wed 29/1015:50IDA - LHR

3 stops43h 40mMultiple Airlines

Deal found 11/9£316

Mon 20/1007:15GEG - LHR

2 stops22h 05mAir Canada

Deal found 10/9£329

Wed 29/1012:55IDA - LHR

1 stop15h 05mAmerican Airlines

Deal found 11/9£331

Mon 24/1106:15BOI - LHR

1 stop20h 25mUnited Airlines

Deal found 10/9£332

Tue 21/1012:35GEG - LHR

1 stop13h 50mUnited Airlines

Deal found 10/9£332

Wed 29/1014:45IDA - LHR

2 stops14h 30mUnited Airlines

Deal found 11/9£339

Wed 22/1005:05GEG - LHR

1 stop20h 35mUnited Airlines

Deal found 11/9£339

Sun 2/1110:45JAC - LHR

1 stop15h 55mUnited Airlines

Deal found 10/9£342

Wed 31/1207:15LWS - LHR

1 stop19h 15mKLM

Deal found 11/9£342

Fly from

Fly to

Route

Depart

Return

Price

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Mon 6/10

13:15-09:50

1 stop13h 35m

London Heathrow

Wed 22/10

11:45-22:15

2 stops17h 30m

£436

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 23/9

07:00-12:20

1 stop22h 20m

London Heathrow

Wed 1/10

09:30-11:39

2 stops33h 09m

£449

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 30/9

09:45-11:50

2 stops19h 05m

London Heathrow

Fri 31/10

14:30-13:44

2 stops29h 14m

£454

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 30/9

14:39-12:20

1 stop14h 41m

London Heathrow

Fri 31/10

11:10-13:29

2 stops32h 19m

£454

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Mon 6/10

06:00-09:50

1 stop20h 50m

London Heathrow

Wed 22/10

06:30-22:15

2 stops22h 45m

£455

Idaho FallsLondon

IDA - LHR

IDALHR

Idaho Falls Fanning Field

Mon 6/10

13:15-14:15

2 stops18h 00m

London Heathrow

Wed 22/10

06:30-18:13

2 stops18h 43m

£456

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Wed 15/10

07:00-12:20

1 stop22h 20m

London Heathrow

Wed 22/10

06:55-09:42

2 stops33h 47m

£459

BoiseLondon

BOI - LHR

BOILHR

Boise Air Term. Gowen Fld

Tue 23/9

13:00-09:50

1 stop13h 50m

London Heathrow

Wed 1/10

06:15-18:16

2 stops19h 01m

£460

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 5/11

07:15-10:30

1 stop19h 15m

London Heathrow

Wed 19/11

06:20-18:58

2 stops20h 38m

£460

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Wed 12/11

06:00-07:05

1 stop17h 05m

London Heathrow

Wed 3/12

06:20-18:56

2 stops20h 36m

£460

Flights are sorted by cheapest return flights first.

Deals found on 10/9

Showing 1-10 of 60 results

...

Best time to book a flight from Idaho to London

Have a flexible travel schedule? Discover the best time to fly to London from Idaho with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Idaho to London

What is the cheapest month to book a flight from Idaho to London?

Currently, January is the cheapest month in which you can book a flight from Idaho to London (average of £112). Flying from Idaho to London in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ID to LON?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Idaho to London as you normally would.

How much does it cost for a return flight from Idaho to London?

Related info for your journey

How long is the flight from Idaho to London?
A quick flight from Idaho to London can take about 13h 35m. Virgin Atlantic provides one of the quickest options available for as low as £436. The distance from Idaho to London is about 4705 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines to fly from Idaho to London one-way?
The cheapest airline one-way is Air Canada, with whom users have recently found tickets for as low as £329. However, be on the lookout for offers from American Airlines and United Airlines, as they are both options that can get you from Idaho to London for a low price.
What are the most popular routes from Idaho to London?
While some choose either Spokane - London Heathrow or Spokane - London Gatwick, Boise Air Term. Gowen Fld - London Heathrow is the most popular route from Idaho to London.
Can I find deals for flights from Idaho to London that include hotel bookings?
Yes. In addition to deals on Idaho to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Idaho to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to London.
Can I find deals for business class flights from Idaho to London?
Yes. Cheapflights offers flight deals from Idaho to London by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Idaho to London?
Currently, January is the cheapest month in which you can book a flight from Idaho to London (average of £112). Flying from Idaho to London in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Milton Keynes

Croydon

Hounslow

Gatwick

Slough

Luton

Deal

Wembley

Ilford

Crawley

Hayes

Watford

Folkestone

Winchester

Chichester

Ipswich

Dartford

Eastbourne

Guildford

Bishop's Stortford

Browse thousands of different options on Cheapflights for your next trip

Top airline flying from Idaho to London

Airline	Cheapest	Average	Flexibility	On-time
Virgin Atlantic	Cheapest£475	Average£886	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights

Fly with Cheapflights

How does Cheapflights help users find flights from Idaho to London?

When you search for this flight from Idaho to London, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from Idaho to London?

Millions of users choose and trust Cheapflights to book the best flight deals from Idaho to London for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Idaho to London with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Idaho to London flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Idaho to London become cheaper?

Of course! You can now track prices for flights from Idaho to London and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from Idaho to London from £188

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 21/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Idaho to London

Keep the following information in mind while searching for Idaho to London flight deals. Data was last updated 12 September 2025.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from Idaho to London

Cheapest flights from Idaho to LondonExplore the most affordable flight options available from Idaho to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.

Explore the most affordable flight options available from Idaho to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Idaho to London that are best for you.

Best time to book a flight from Idaho to London

Have a flexible travel schedule? Discover the best time to fly to London from Idaho with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Idaho to London

What is the cheapest month to book a flight from Idaho to London?

What is the cheapest time of day to fly from ID to LON?

Find hourly flight availability from Idaho to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 September 2025.

How much does it cost for a return flight from Idaho to London?

Related info for your journey

Find useful and relevant information for your journey from Idaho to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from Idaho to London?

What are the cheapest airlines to fly from Idaho to London one-way?

What are the most popular routes from Idaho to London?

Can I find deals for flights from Idaho to London that include hotel bookings?

How can I find direct flights from Idaho to London?

Can I find deals for business class flights from Idaho to London?

What is the cheapest month to book a flight from Idaho to London?

Travelling to a place near London?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Idaho to London

See prices for flight routes from nearby airports that may be better suited for you.

Top airline flying from Idaho to London

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Idaho to London?

Why should you use Cheapflights to find cheap flight tickets from Idaho to London?

Can Cheapflights find flights from Idaho to London with no change fees?

Can Cheapflights notify me if prices for flights from Idaho to London become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Idaho to London
Explore the most affordable flight options available from Idaho to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.